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CCHN Industry

CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

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Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

...
CCHN Industry
 
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CCHN Industry

CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

Blog

Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

...
25mm Linear Steel Ball Bushing Bearing SDM25GA
 
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25mm Linear Steel Ball Bushing Bearing SDM25GA


$52.92
This precision linear motion ball bearing has a 25mm bore with metric outer diameter 40mm and length 50mm. Compact design an
SKU: CHN-LBB-SDM25
Free Shipping Worldwide
Delivery date: 6-12 days

Linear ball bushings with 25mm bore size and 6 ball circuits are for sale. They are constructed hardened steel outer housings, resin cages, steel races and chrome steel balls, delivering remarkable sturdiness and accuracy.

Specifications

dimensions of sdm linear bearings

Nominal shaft diameterResin retainerMajor dimensions and tolerance
SDMBall circuitWeightSDM...AJBall circuitWeightSDM...OPBall circuitWeightdrTolerance
PrecisionHigh
16mmSDM16GM476gLM16UU-AJ475gSDM16OP358g16mm0
-6μm
0
-9μm
20mmSDM20GM5100gLM20UU-AJ598gSDM20OP479g20mm0
-7μm
0
-10μm
25mmSDM25GM6240gLM25UU-AJ6237gSDM25OP5203g25mm
30mmSDM30GM6270gLM30UU-AJ6262gSDM30OP5228g30mm
35mmSDM35GM6425gLM35UU-AJ6420gSDM35OP5355g35mm0
-8μm
0
-12μm
40mmSDM40GM6654gLM40UU-AJ6640gSDM40OP5546g40mm
50mmSDM50GM61700gLM50UU-AJ61680gSDM50OP51420g50mm
60mmSDM60GM62000gLM60UU-AJ61980gSDM60OP51650g60mm0
-9μm
0
-15μm
80mmSDM80GM64520gLM80UU-AJ64400gSDM80OP53750g80mm
100mmSDM100GM68600gLM100UU-AJ68540gSDM100OP57200g100mm0
-10μm
0
-20μm

 

Major dimensions and toleranceEccentricityRadial clearance (Max)Basic load rating
DLBWD1hh1θ
mmTolerancemmTolerancemmTolerancePrecisionHighDynamic Static
280
-13μm
370
-200μm
26.50
-200μm
1.6mm27mm1.5mm11mm80°8μm12μm-6μm774c N1180co N
320
-16μm
4230.51.6mm30.5mm1.5mm11mm60°10μm15μm882cN1370co N
40590
-300μm
410
-300μm
1.85mm38mm2mm12mm50°980c N1570co N
456444.51.85mm43mm2.5mm15mm50°-8μm1570c N2740co N
520
-19μm
7049.52.1mm49mm2.5mm17mm50°12μm20μm1670c N3140co N
608060.52.1mm57mm3mm20mm50°-10μm2160c N4020co N
80100742.6mm76.5mm3mm25mm50°-13μm3820c N7940co N
900
-22μm
110853.15mm86.5mm3mm30mm50°17μm25μm4700c N10000co N
1201400
-400μm
105.50
-400μm
4.15mm116mm3mm40mm50°-20μm7350c N16000co N
1500
-25μm
175125.54.15mm145mm3mm50mm50°20μm30μm14100c N34800co N

Tips: Advantanges of Ball Bearings and When to Use Them

Whether in industrial equipment or household appliances, bearings are designed for allowing smooth movement between separate components, of which there are mainly two types: roller bearings and ball bearings. What are the differences between both of them? When should we use one rather than the other?

What is a ball bearing?

A ball bearing carry hardened steel balls along inner and outer raceways. When a load is applied, the ball bearing creates rotation by transfering the load from the inner raceway to the outer raceway. One of the main features of a ball bearing is its point contact between the ball and the shaft, although very small deformations can expand thie very small contact area.

Strengths

1. Low friction

Having a small area of contact means that ball bearings produce much less friction resulted from the motion of inner and outer raraceways, thus components are in a smooth rotation. For this reason, ball bearings are preferred in applications where speed and easy operations are required.

2. Able to handle radial and thrust loads

 Another unique characteristic of a ball bearing is that it can rotate on more than one axis. This means that it can react to loads applied from different directions, including radial and thrust loads. The extra versatility makes it a wonderful choice for equipment that aren't used according to strict standards.

When should you use ball bearings?

  • When you need more flexible movement
    Ball bearings are designed to rotate when either a radial or thrust is applied on them. Thus the ball bearing is typically used for devices where the input is variable, such as those that are designed for human use.
  • When lighter loads are preferred in designing equipment
    The point contact that features in ball bearings has its pros and cons among which the major ones are reduced friction and concentrated load. This means they are suitable for lighter loads otherwise they tend to fail more likely. Do limit the load to the specified range prescribed by the manufacturer. 
  • When greater speeds are required in operation
    As is said, the major benefit of the small contact area of ball bearings is that they generate minimal friction, allowing them to operate at high speeds. Lower friction means less wear and tear between the rotating spherical elements, delivering impressive durability.